Illustrative Math - Algebra 1 - Unit 5 -Lesson 15 - Formative Library | Library

Lin opened a savings account that pays 5\frac{1}{4}% interest annually and deposited $5,000.

If she makes no deposits and no withdrawals for 3 years, how much money will be in her account?

F.IF.7.e

7.EE.3

F.LE.2

F.BF.1.a

F.IF.6

A person loans his friend $500. They agree to an annual interest rate of 5%.

Write an expression for computing the amount owed on the loan, in dollars, after t years if no payments are made.

F.IF.7.e

7.EE.3

F.LE.2

F.BF.1.a

F.IF.6

Select all situations that are accurately described by the expression 15*3^{5}.

A population of bacteria begins at 15,000. The population triples each hour. How many bacteria are there after 5 hours?

A bank account balance is $15,000. It grows by $3,000 each year. What is the bank account balance, in thousands of dollars, after 5 years?

A population of bacteria begin at 15,000. The population quintuples each hour. How many thousand bacteria are there after 3 hours?

A bank account balance is $15. The account balance triples each year. What is the bank account balance, in dollars, after 5 years?

A population of bacteria begins at 15,000. The population triples each hour. How many thousand bacteria are there after 5 hours?

F.IF.7.e

7.EE.3

F.LE.2

F.BF.1.a

F.IF.6

10.

Here are graphs of two exponential functions, f and g.
If f(x)=100*(\frac{2}{3})^{x} and g(x)=100*b^{x}, what could be the value of ?

\frac{3}{2}

\frac{1}{3}

\frac{3}{4}

1

F.IF.7.e

7.EE.3

F.LE.2

F.BF.1.a

F.IF.6

11.

The real estate tax rate in 2018 in a small rural county is increasing by \frac{1}{4}%. Last year, a family paid $1,200.

Which expression represents the real estate tax, in dollars, that the family will pay this year?

1,200*(1.0025)

1,200+1,200*(\frac{1}{4})

1,200*(1.025)

1,200*(1.25)

F.IF.7.e

7.EE.3

F.LE.2

F.BF.1.a

F.IF.6

12.

Two inequalities are graphed on the same coordinate plane.
Select all of the points that are solutions to the system of the two inequalities.

F.IF.7.e

7.EE.3

F.LE.2

F.BF.1.a

F.IF.6

This lesson is from Illustrative Mathematics. Algebra 1, Unit 5, Lesson 15. Internet. Available from https://curriculum.illustrativemathematics.org/HS/teachers/1/5/15/index.html ; accessed 26/July/2021.

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